1. /* ===========================================================

  2.  * JFreeChart : a free chart library for the Java(tm) platform

  3.  * ===========================================================

  4.  *

  5.  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.

  6.  *

  7.  * Project Info:  http://www.jfree.org/jfreechart/index.html

  8.  *

  9.  * This library is free software; you can redistribute it and/or modify it 

  10.  * under the terms of the GNU Lesser General Public License as published by 

  11.  * the Free Software Foundation; either version 2.1 of the License, or 

  12.  * (at your option) any later version.

  13.  *

  14.  * This library is distributed in the hope that it will be useful, but 

  15.  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 

  16.  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 

  17.  * License for more details.

  18.  *

  19.  * You should have received a copy of the GNU Lesser General Public License 

  20.  * along with this library; if not, write to the Free Software Foundation, 

  21.  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

  22.  *

  23.  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

  24.  * in the United States and other countries.]

  25.  *

  26.  * ------------------------

  27.  * ChartChangeListener.java

  28.  * ------------------------

  29.  * (C) Copyright 2000-2004, by Object Refinery Limited.

  30.  *

  31.  * Original Author:  David Gilbert (for Object Refinery Limited);

  32.  * Contributor(s):   -;

  33.  *

  34.  * $Id: ChartChangeListener.java,v 1.2 2005/02/09 17:12:50 mungady Exp $

  35.  *

  36.  * Changes (from 24-Aug-2001)

  37.  * --------------------------

  38.  * 24-Aug-2001 : Added standard source header. Fixed DOS encoding problem (DG);

  39.  * 07-Nov-2001 : Updated header (DG);

  40.  * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG);

  41.  * 14-Oct-2002 : Now extends java.util.EventListener (DG);

  42.  *

  43.  */

  44. 

  45. package org.jfree.chart.event;

  46. 

  47. import java.util.EventListener;

  48. 

  49. /**

  50.  * The interface that must be supported by classes that wish to receive 

  51.  * notification of chart events.

  52.  * <P>

  53.  * The {@link org.jfree.chart.ChartPanel} class registers itself with the 

  54.  * chart it displays, and whenever the chart changes, the panel redraws itself.

  55.  *

  56.  */

  57. public interface ChartChangeListener extends EventListener {

  58. 

  59.     /**

  60.      * Receives notification of a chart change event.

  61.      *

  62.      * @param event  the event.

  63.      */

  64.     public void chartChanged(ChartChangeEvent event);

  65. 

  66. }